Graphite is a non-metallic mineral resource with a variety of special properties such as high temperature resistance, electrical conductivity, thermal conductivity, lubrication, chemical stability,...
As a kind of power generation device that converts chemical energy in hydrogen and oxidant into electricity, the gas tightness of fuel cell stack is very important. This is the test of VET for the ...
Wang Fuwen, deputy minister of the Ministry of Commerce and deputy representative of international trade negotiations, said at the press conference on the celebration of the 70th anniversary of the...
Hydrogen pressure reducing valve is a very important equipment, it can effectively control the pressure of hydrogen in the pipeline, the normal operation and use of hydrogen.
With the development o...